Textile fabric tensile resistance detection device and detection method

Abstract

The invention relates to the field of new material detection, in particular to a textile fabric tensile strength detection device and a detection method. The central tensile detection structures are arranged at the upper end and the lower end of the longitudinal multi-section telescopic structure; each group of central tensile detection structure comprises a plurality of groups of central tensile detection pieces; a concentric ring structure with a jacking end, a detection end I and an adsorption end is arranged on the central tensile detection piece; the peripheral tensile detection structure is arranged between the two groups of central tensile detection structures and along the periphery of the plurality of groups of central tensile detection parts, and comprises a peripheral tensile detection frame; a peripheral tensile detection piece is arranged on the peripheral tensile detection frame; and a detection end II is arranged on the peripheral tensile detection piece. According to the invention, through cooperation of progressive detection of the central tensile detection structure and multi-dimensional clamping of the peripheral tensile detection structure, global simulation tensile of the cloth is realized, and a high-precision, nondestructive and multi-working-condition simulation comprehensive evaluation means is provided for research and development of new materials.

Description

Technical Field

[0001] This invention relates to the field of new material testing, and in particular to a device and method for testing the tensile strength of textile fabrics. Background Technology

[0002] With the ever-increasing demands for new material performance in fields such as aerospace, smart wearables, and high-performance protective equipment, the research and development direction of textile materials has shifted from traditional natural and synthetic fibers to novel functional fabrics with high strength, high modulus, and anisotropy. Tensile strength, as a core indicator for evaluating the mechanical durability and structural stability of textile materials, directly relates to the service life and safety reliability of new materials in practical applications. Therefore, constructing a precise and efficient tensile strength testing system is of crucial research value for guiding the optimization of new material formulations, verifying the rationality of textile structural designs, and promoting the industrial application of high-end textile materials.

[0003] However, existing tensile strength testing devices for textiles have significant limitations in their force application methods. Most devices use single-axis or dual-axis clamping methods, which can only apply stable tension in a single direction along the warp or weft. This makes it difficult to simulate the multidimensional and multi-directional stress states that new materials experience under complex actual working conditions, resulting in significant deviations between the test results and real-world application scenarios. Existing devices mostly rely on manual flattening and fixing of the fabric, which not only makes it difficult to ensure uniform stress distribution in the initial state of the sample, but also often uses a monotonous force application mode with a fixed speed during the tensile process, making it impossible to flexibly adjust the force direction and loading path. Ultimately, this fails to meet the needs of refined mechanical characterization in the research and development of new materials. Summary of the Invention

[0004] To address the problems existing in the background technology, a tensile strength testing device and method for textile fabrics are proposed. By using the progressive testing of the central tensile strength testing structure and the multi-dimensional clamping synergy of the peripheral tensile strength testing structure, the full-domain simulated tensile strength of the fabric is realized, providing a comprehensive evaluation method with high precision, non-destructive testing and multi-condition simulation for the research and development of new materials.

[0005] This invention proposes a tensile strength testing device for textile fabrics, comprising a longitudinally multi-segment telescopic structure and a central tensile strength testing structure and an outer tensile strength testing structure connected in series through the longitudinally multi-segment telescopic structure; two sets of central tensile strength testing structures are arranged in a mirror image on the upper and lower ends of the longitudinally multi-segment telescopic structure; the fabric to be tested is placed between the two sets of central tensile strength testing structures, each set of central tensile strength testing structures further comprising multiple sets of movable and telescopic central tensile strength testing elements; each central tensile strength testing element is provided with a concentric ring structure with a lifting end, a testing end, and an adsorption end; the adsorption ends at the upper and lower ends adsorb the fabric. The fabric is fixed or subjected to a pulling motion. The upper and lower detection ends collect the fabric's center tensile strength data point-to-point, line-to-surface. The upper and lower lifting ends lift the fabric, fixing or simulating a pulling motion. A set of peripheral tensile strength detection structures is set up between the two sets of central tensile strength detection structures and around the periphery of multiple sets of central tensile strength detection components. This includes a peripheral tensile strength detection frame that moves along an arc trajectory. Peripheral tensile strength detection components that move along the frame are mounted on the frame. A second detection end is mounted on each component. The second detection end acquires the tensile strength data of the fabric's periphery through swinging and moving. During tensile strength testing, the central and peripheral tensile strength detection structures work together to simulate a combined force scenario of outward pushing from the center and outward pulling from the edges, while also supporting independent operation of the central and peripheral tensile strength detection structures.

[0006] Preferably, the longitudinal multi-section telescopic structure includes a support platform located in the middle and telescopic cylinders located at the upper and lower ends of the support platform respectively; the support platform is connected to the peripheral tensile strength detection structure; and the telescopic cylinders are connected to the central tensile strength detection structure on the corresponding side.

[0007] Preferably, the central tensile strength testing structure includes a drive platform connected to the telescopic end of the telescopic cylinder; a rotating cylinder is provided on the drive platform; multiple sets of central tensile strength testing components are provided on the rotating cylinder, one set of central tensile strength testing components is located at the center of the rotating cylinder, and the other multiple sets of central tensile strength testing components are arranged around the center of the rotating cylinder and move radially thereafter.

[0008] Preferably, a slide rail is arranged radially at the bottom of the rotating cylinder; the central tensile strength detection component includes a telescopic column; the telescopic column located at the center of the rotating cylinder is fixed in position, and the telescopic column arranged around the center of the rotating cylinder moves horizontally along the slide rail; a cylinder body is provided at the upper end of the telescopic column; a concentric ring structure is provided on the cylinder body; the lifting end is located at the center of the cylinder body, and a telescopic lifting head is provided at the lifting end; a detection end is located outside the lifting end, and a lifting ring is provided at the detection end that is telescopic and extends around the lifting head; a ball bearing detector is provided around the lifting ring; an adsorption end is located outside the detection end, and a lifting ring is provided at the adsorption end that is telescopic and extends around the lifting ring; an adsorption hole is provided around the lifting ring; the ball bearing detector is attached to the fabric surface and is pulled and rolled when the fabric deforms, and then the deformation of the fabric under tension is inferred by associating the rolling data unit and the tensile force application unit; the adsorption hole is connected to a vacuum pump to form a negative pressure environment.

[0009] Preferably, the peripheral tensile strength testing structure includes two sets of ring frames located at the upper and lower ends of the support platform; multiple arc-shaped tracks are provided on the opposite ends of the two sets of ring frames; the peripheral tensile strength testing frame moves along the arc-shaped trajectory by cooperating with the upper and lower arc-shaped tracks, and a second slide rail is provided on the peripheral tensile strength testing frame; the peripheral tensile strength testing component moves along the peripheral tensile strength testing frame by cooperating with the second slide rail.

[0010] Preferably, the outer tensile strength testing frame is a horizontally placed U-shaped structure with the opening facing inwards from the ring frame, and a slider 1 that cooperates with the arc-shaped track is provided on the vertical section; the outer tensile strength testing component moves within its U-shaped structure along the slider 2 on its vertical section.

[0011] Preferably, the peripheral tensile strength testing component includes a peripheral tensile strength testing frame; the upper and lower ends of the peripheral tensile strength testing frame are provided with left-right rotating sliders, which cooperate with slide rails to realize the movement and swing of the peripheral tensile strength testing frame; the side of the peripheral tensile strength testing frame facing the inner ring frame is provided with a swing cover that rotates up and down; multiple sets of peripheral tensile strength detectors and slide rails are provided inside the swing cover; multiple sets of peripheral tensile strength detectors are located on the testing end two, wherein the peripheral tensile strength detector located in the middle is fixed in position, and the peripheral tensile strength detectors located on both sides move horizontally through slide rails.

[0012] Preferably, the peripheral tensile strength detector includes a detection seat located inside the swing cover; the detection seat is provided with a double-sided rack that moves back and forth and gears located on the upper and lower sides of the double-sided rack; the gears rotate by meshing with the double-sided rack, and the center of the gear is connected to the rotating frame; the rotating frame extends out of the swing cover and the end is connected to the detection head; the detection head is provided with two sets, one above and one below, corresponding to the gears, and a tensile strength detection space is left between the two sets of detection heads.

[0013] Preferably, the detection ends of the two sets of detection heads are also equipped with anti-slip airbags and pressure detectors.

[0014] This invention further proposes a method for testing the tensile strength of textile fabrics, the steps of which are as follows: S1. Activate the longitudinal multi-section telescopic structure; S2. The central tensile strength detection structure is used to fix the center of the fabric and automatically unfold it. S3. Use the outer tensile strength testing structure to perform outer splicing and secondary tensioning of the fabric. S4, Diverse Detection Mode Execution Phase: Mode A: Independent working mode for the center and periphery; In this mode, the central tensile strength testing structure and the periphery tensile strength testing structure do not interfere with each other, and apply specific tensile stress to different areas of the fabric respectively. Mode B: Center and periphery linkage working mode; In this mode, the central tensile testing structure and the periphery tensile testing structure work together to simulate the combined force scenario of the center pushing outward and the edge pulling outward. S5. The system summarizes the point-line-surface deformation data collected by the ball detector in the central tensile testing structure and the edge pressure data collected by the pressure detector in the peripheral tensile testing structure. By analyzing the above data, the tensile performance of the fabric is obtained.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: 1. This invention, through the coordinated operation of the central tensile strength testing structure and the peripheral tensile strength testing structure, can simultaneously simulate a combined force scenario of outward pushing from the center and outward pulling from the edges, while also supporting independent operation of the central and peripheral tensile strength testing structures. Before testing, the rotating cylinder drives the fabric to rotate as a whole, and the peripheral testing components oscillate in multiple directions, achieving omnidirectional, variable-angle stretching of the fabric. This provides a precise simulation method for evaluating the complex, multi-directional stress environment faced by new fabrics in practical applications and for testing their anisotropic mechanical properties. 2. To address the monitoring needs for microstructural changes in new material development, the central tensile strength testing component of this invention integrates a lifting end, a ball bearing detector, and an adsorption end. The ball bearing detector converts minute deformations of the fabric into data on the rolling of the balls, thereby accurately capturing the microscopic yield point and crack initiation process of the new material in the early stages of tensile stress. Simultaneously, multiple sets of testing components move radially, forming a continuous data sampling band from the center to the edge, ensuring the authenticity and smoothness of the stress distribution curve and avoiding the biases of traditional single-point data acquisition. 3. This invention uses vacuum adsorption at the adsorption end instead of traditional rigid mechanical clamps, combined with flexible lifting at the lifting end, to achieve non-destructive fixing and flattening of the fabric. In particular, the method of first adsorbing at the center and then moving radially to unfold the fabric gently and evenly without wrinkles or stress. In addition, the anti-slip airbags on the outer detection head provide sufficient friction to further unfold the fabric when gripping the edges, while also preventing stress concentration through elastic cushioning, making it especially suitable for the protective detection of new materials with high elasticity or low strength. 4. This invention achieves fully automated operation through a longitudinal multi-section telescopic structure, automatically raising the device before testing to reserve sufficient operating space and automatically lowering it to fit during testing, reducing manual intervention. More importantly, its ability to freely switch between independent and linked working modes allows the same device to perform both routine standardized tests and destructive testing or simulation tests required for new material research and development. This multi-purpose design significantly reduces the equipment purchase cost of new material testing laboratories and greatly shortens the research and development testing cycle. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a device for testing the tensile strength of textile fabrics. Figure 2 Exploded view of a textile tensile strength testing device; Figure 3 Diagram of the central tensile strength test structure; Figure 4 This is a diagram of the external tensile strength testing structure; Figure 5 This is a structural diagram of multiple sets of central tensile strength test specimens; Figure 6 This is a structural diagram of a single-group central tensile strength test specimen; Figure 7 This is a breakdown diagram of the external tensile strength testing structure; Figure 8 Structural diagram of the outer tensile testing frame and outer tensile testing components; Figure 9 This is a breakdown diagram of the outer tensile strength testing component; Figure 10 This is a cross-sectional view of the peripheral tensile detector; Attached reference numerals: 1. Base; 2. Central tensile strength testing structure; 201. Drive platform; 202. Rotating cylinder; 20201. Slide rail one; 203. Central tensile strength testing component; 20301. Telescopic column; 20302. Cylinder body; 20303. Lifting head; 20304. Lifting ring one; 20305. Lifting ring two; 204. Cylinder cover; 3. Peripheral tensile strength testing structure; 301. Ring frame; 30101. Arc-shaped track; 302. Peripheral tensile strength testing... Test frame; 30201, slide rail two; 30202, slider one; 303, peripheral tensile strength test piece; 30301, peripheral tensile strength test frame; 30302, swing cover; 30303, slider two; 30304, test seat; 30305, rotating frame; 30306, test head; 30307, ​​anti-slip airbag; 30308, gear; 30309, double-sided rack; 4, longitudinal multi-section telescopic structure; 401, support platform; 402, telescopic cylinder. Detailed Implementation

[0017] Example 1: This invention proposes a device for testing the tensile strength of textile fabrics, such as... Figures 1-4 As shown, the structure includes a longitudinal multi-section telescopic structure 4 and a central tensile strength detection structure 2 and an outer tensile strength detection structure 3 connected in series through the longitudinal multi-section telescopic structure 4. Two sets of central tensile strength detection structures 2 are arranged in a mirror image on the upper and lower ends of the longitudinal multi-section telescopic structure 4, with the lower central tensile strength detection structure 2 mounted on a base 1. The fabric to be tested is placed between the two sets of central tensile strength detection structures 2. Each set of central tensile strength detection structures 2 includes multiple sets of movable and telescopic central tensile strength detection elements 203. Each central tensile strength detection element 203 is equipped with a concentric ring structure with a lifting end, a detection end, and an adsorption end. The adsorption ends at the upper and lower ends adsorb the fabric. The fabric is fixed or subjected to a pulling motion by the central tensile testing end. The upper and lower testing ends collect the tensile strength data of the fabric's center point-to-line-to-surface. The upper and lower lifting ends lift the fabric, fixing or simulating a pulling motion. A set of peripheral tensile testing structures 3 is set between the two sets of central tensile testing structures 2 and along the periphery of multiple sets of central tensile testing components 203, including a peripheral tensile testing frame 302 that moves along an arc trajectory. Peripheral tensile testing components 303 that move along the frame are mounted on the frame 302. A second testing end is mounted on the component 303. The second testing end acquires the tensile strength data of the fabric's periphery by swinging and moving. During tensile testing, the central tensile testing structure 2 and the peripheral tensile testing structure 3 work together to simulate a combined force scenario of outward pushing from the center and outward pulling from the edges, while also supporting independent operation of the two structures.

[0018] like Figure 2As shown, the longitudinal multi-section telescopic structure 4 includes a support platform 401 located in the middle and telescopic cylinders 402 located at the upper and lower ends of the support platform 401 respectively; the support platform 401 is connected to the outer tensile strength detection structure 3; the telescopic cylinders 402 are connected to the central tensile strength detection structure 2 on the corresponding side.

[0019] The support platform 401 and the telescopic cylinders 402 at the upper and lower ends form a longitudinal multi-section telescopic structure 4. Therefore, before testing, the outer tensile strength testing structure 3 and the upper central tensile strength testing structure 2 can be raised using the telescopic cylinders 402 at the upper and lower ends, reserving sufficient operating space for the pre-processing of the fabric to be tested. During testing, the outer tensile strength testing structure 3 and the upper central tensile strength testing structure 2 descend, the upper and lower central tensile strength testing components 203 are attached to the upper and lower ends of the fabric, and the outer tensile strength testing components 303 are attached to the outer periphery of the fabric.

[0020] like Figures 5-6 As shown, the central tensile strength testing structure 2 includes a drive platform 201 connected to the telescopic end of the telescopic cylinder 402; a rotating cylinder 202 driven to rotate by a motor is provided on the drive platform 201; multiple sets of central tensile strength testing elements 203 are provided on the rotating cylinder 202, one set of central tensile strength testing elements 203 is located at the center of the rotating cylinder 202, and the other multiple sets of central tensile strength testing elements 203 are arranged around the center of the rotating cylinder 202 and move radially thereafter.

[0021] By having multiple sets of central tensile strength testing elements 203 rotate with the overall rotation of the rotating cylinder 202 and the movement of the peripheral central tensile strength testing elements 203, a detection trajectory that includes points, lines, and surfaces is formed, resulting in a large detection range and high efficiency for the fabric.

[0022] It should be further explained that the bottom of the rotating cylinder 202 is provided with a slide rail 20201 arranged radially thereon; the central tensile strength testing component 203 includes a telescopic column 20301; the telescopic column 20301 located at the center of the rotating cylinder 202 is fixed in position, and the telescopic column 20301 arranged around the center of the rotating cylinder 202 moves horizontally along the slide rail 20201 through a driving structure; a cylinder body 20302 is provided at the upper end of the telescopic column 20301.

[0023] It should be further explained that the concentric ring structure is set on the cylinder 20302; the lifting end is located at the center of the cylinder 20302, and an electrically controlled telescopic lifting head 20303 is set at the lifting end; the first detection end is located on the periphery of the lifting end, and a first lifting ring 20304 that surrounds the lifting head 20303 and is electrically telescopic is set at the first detection end; a ball bearing detector is set around the first lifting ring 20304; the adsorption end is located on the periphery of the first detection end, and a second lifting ring 20305 that surrounds the first lifting ring 20304 and is electrically telescopic is set at the adsorption end; an adsorption hole is set around the second lifting ring 20305.

[0024] It should be further explained that the ball detector is attached to the surface of the fabric and is pulled and rolled when the fabric is deformed. Then, by associating the rolling data unit and the tension force unit, the deformation of the fabric under tension can be inferred.

[0025] It should be further explained that the adsorption pores are connected to a vacuum pump to create a negative pressure environment.

[0026] It should be further explained that a cylinder cover 204 is provided on the opening of the rotating cylinder 202; the cylinder cover 204 is provided with a through groove that matches the moving trajectory of each cylinder 20302.

[0027] It should be further noted that the through groove has a cross-shaped structure.

[0028] The cylinder 20302 moves along the slide rail 20201 and rises and falls under the action of the telescopic column 20301, allowing the concentric ring structure to move and rise and fall synchronously, ultimately achieving the flexible functions of the lifting end, detection end, and adsorption end. The lifting head 20303, working on one or both sides, lifts the fabric at a random or designated point in the center. This can fix the fabric, assist in laying the fabric flat, and also simulate the pulling action of the fabric. The adsorption effect of the adsorption holes is the same. The ball detector converts the rolling of the balls into deformation data, which is related to the tensile strength.

[0029] Before the test begins, all the lower cylinders 20302 are brought together, and the fabric to be tested is placed on the cylinder cover 204. The adsorption end of the central cylinder 20302 extends out of the through-slot, adsorbing and fixing the center of the fabric through the adsorption holes. The outer cylinders 20302 move outward along the through-slot while adsorbing the fabric through the adsorption end extending out of the through-slot, during which the fabric is unfolded. After unfolding, the outer tensile strength testing structure 3 aligns and fixes itself to the outer periphery of the unfolded fabric, and the test can then begin.

[0030] During testing, the upper cylinder 20302 extends beyond the cylinder cover 204. The lifting end, detection end 1, and adsorption end on one side can alternately operate by lifting and lowering. The upper and lower lifting ends, detection end 1, and adsorption ends can operate in the same mode or different modes can be selected. For example, the lower end simulates a pulling action by lifting, while the upper detection end 1 performs the test. The upper adsorption end simulates a pulling action by adsorption, while the lower detection end 1 performs the test. The outer tensile strength testing structure 3 performs tensile strength testing, with the upper and lower detection ends 1 positioned opposite each other and testing synchronously. During the testing process, rotating the cylinder 202 drives the entire fabric to rotate, allowing for further adjustment of the direction and position of the stretching. Compared to traditional testing methods that stretch along the warp and weft directions, the stretching action in this invention is more flexible and diverse.

[0031] like Figure 7As shown, the peripheral tensile testing structure 3 includes two sets of annular frames 301 located at the upper and lower ends of the support platform 401; multiple arc-shaped tracks 30101 are provided on the opposite ends of the two sets of annular frames 301; the peripheral tensile testing frame 302 moves along the arc-shaped track by cooperating with the upper and lower arc-shaped tracks 30101, and a second slide rail 30201 is provided on the peripheral tensile testing frame 302; the peripheral tensile testing component 303 moves along the peripheral tensile testing frame 302 by cooperating with the second slide rail 30201.

[0032] By moving the outer tensile strength testing component 303 along the outer tensile strength testing frame 302, the fabric can be further unfolded during testing to make it taut.

[0033] like Figure 8 As shown, the outer tensile testing frame 302 is a horizontally placed U-shaped structure with its opening facing the inside of the ring frame 301. A slider 30202 that cooperates with the arc-shaped track 30101 is provided on the vertical section. The outer tensile testing component 303 moves along the slider 30201 on its vertical section within its U-shaped structure.

[0034] The peripheral tensile testing frame 302 moves along an arc-shaped trajectory, and the peripheral tensile testing component 303 moves along the peripheral tensile testing frame 302, further enriching the movement flexibility of the peripheral tensile testing component 303 in order to meet inspection requirements.

[0035] like Figure 9 As shown, the peripheral tensile strength testing component 303 includes a peripheral tensile strength testing frame 30301; the upper and lower ends of the peripheral tensile strength testing frame 30301 are provided with a second slider 30303 driven by a motor to rotate left and right, and the second slider 30303 cooperates with a second slide rail 30201 to realize the movement and swing of the peripheral tensile strength testing frame 30301; a swing cover 30302 driven by a motor to rotate up and down is provided on the side of the peripheral tensile strength testing frame 30301 facing the ring frame 301; multiple sets of peripheral tensile strength detectors and a third slide rail are provided inside the swing cover 30302; multiple sets of peripheral tensile strength detectors are located on the second testing end, of which the peripheral tensile strength detector located in the middle is fixed in position, and the peripheral tensile strength detectors located on both sides move horizontally through the third slide rail.

[0036] The peripheral tensile strength testing frame 30301 rotates left and right, while the swing cover 30302 rotates up and down, enabling multiple peripheral tensile strength detectors to swing synchronously up and down or left and right, simulating multi-directional tensile actions. During testing, the central peripheral tensile strength detector is fixed, securing the fabric's periphery from the center, while the peripheral tensile strength detectors on both sides move outwards to further unfold and tighten the fabric for better tensile strength testing.

[0037] like Figure 10As shown, the peripheral tensile detector includes a detection seat 30304 located inside the swing cover 30302; the detection seat 30304 is equipped with a double-sided rack 30309 that moves back and forth under electronic control and gears 30308 located on the upper and lower sides of the double-sided rack 30309; the gears 30308 rotate by meshing with the double-sided rack 30309, and the center of the gear is connected to the rotating frame 30305; the rotating frame 30305 extends out of the swing cover 30302 and the end is connected to the detection head 30306.

[0038] It should be further explained that the detection head 30306 is set up in two sets, one above the other, corresponding to the gear 30308, and there is a tensile testing space between the two sets of detection heads 30306.

[0039] After the central tensile strength testing structure 2 initially fixes and unfolds the fabric, the two sets of detection heads 30306 located in the center of the peripheral tensile strength detector move away synchronously with the opening of the rotating frame 30305. Once the edge of the fabric enters the tensile strength testing space, the two sets of detection heads 30306 come together to fix and clamp the fabric. The peripheral tensile strength detectors on both sides move outward to unfold the fabric before clamping and fixing it. During testing, the peripheral tensile strength testing element 303 moves outward along the peripheral tensile strength testing frame 302, stretching the fabric to tautness, and then moves outward again to achieve the stretching effect. During the stretching process, different testing modes can be executed by rotating the rotating cylinder 202, moving the peripheral tensile strength testing frame 302, swinging the detection heads 30306, and coordinating the upper and lower lifting ends, detection ends, and adsorption ends.

[0040] It should be further noted that the detection ends of the two sets of detection heads 30306 are also equipped with anti-slip airbags 30307 for fabric protection and anti-slip purposes, as well as pressure detectors for collecting tensile data of the fabric's outer perimeter. The pressure detectors can record the force data applied to the outer perimeter of the fabric during deformation and breakage, in order to determine the tensile performance of the fabric's outer perimeter.

[0041] Example 2: Based on the textile tensile strength testing device in Example 1, this example proposes a method for testing the tensile strength of textiles, with the following steps: S1. Activate the longitudinal multi-section telescopic structure 4: Using the telescopic cylinders 402 at the upper and lower ends of the support platform 401, raise the upper central tensile strength detection structure 2 and the outer tensile strength detection structure 3 to reserve sufficient operating space for the placement of the fabric to be tested; lay the textile material to be tested flat on the cylinder cover 204 above the base 1; at this time, the lower central tensile strength detection structure 2 is in a converged state (the lower cylinder 20302 is retracted into the rotating cylinder 202). S2. Fabric Center Fixing and Automatic Unfolding: In this stage, the central tensile strength detection structure 2 independently completes the pre-fixation and flattening of the fabric, laying the foundation for subsequent testing. The central tensile strength detection component 203 located at the center of the rotating cylinder 202 is controlled to move. Its adsorption end (lifting ring 20305) extends out of the through groove of the cylinder cover 204, and forms a negative pressure by connecting the vacuum pump through the adsorption hole to adsorb and fix the center point of the fabric. Multiple sets of central tensile strength detection components 203 set around the center of the rotating cylinder 202 are controlled to move outward along the slide rail 20201 (radially) under the drive of the telescopic column 20301. At the same time, its adsorption end extends out of the through groove to adsorb the fabric and pull it outward. This process simulates the action of manual fabric laying, smoothly unfolding the fabric from the center to the outside and eliminating wrinkles. S3. External connection and secondary tensioning of the fabric: After the center of the fabric is initially fixed, the peripheral tensile strength detection structure 3 begins to intervene independently, clamping and unfolding the edge of the fabric. The peripheral tensile strength detection structure 3 is activated, and the peripheral tensile strength detection frame 302 moves along the arc track 30101 on the ring frame 301 via the slider 30202, adjusting to the position corresponding to the edge of the fabric. The peripheral tensile strength detector (detection seat 30304) located in the middle of the peripheral tensile strength detection component 303 is activated. The double-sided rack 30309 drives the gear 30308 to rotate, causing the rotating frame 30305 to open, separating the upper and lower sets of detection heads 30306. After the edge of the fabric enters the tensile strength detection space, the detection head 30306 closes, fixing and clamping the fabric. The peripheral tensile strength detectors located on both sides move horizontally outward via the slide rail 3, further unfolding and tightening the edge of the fabric, so that it reaches the tight state to be tested. S4, Diverse Detection Mode Execution Phase: Mode A: Independent working mode of center and periphery (fixed point / fixed area fine detection); In this mode, the central tensile strength detection structure 2 and the periphery tensile strength detection structure 3 do not interfere with each other, and apply specific tensile stress to different areas of the fabric respectively; The specific method is as follows: Central area (point-line-surface) detection: The lower central tensile testing component 203 is controlled, with its lifting end (lifting head 20303) working on one or both sides to lift the center of the fabric from bottom to top, simulating local point-like or surface-like support and stretching; the upper adsorption end (lifting ring 20305) adsorbs and pulls upwards, while the lower adsorption end adsorbs and fixes downwards, forming vertical resistance to tensile stress; during this process, the ball bearing detector on the first detection end (lifting ring 20304) adheres to the fabric surface; when the fabric deforms, the ball bearing rolls under force, and the system accurately infers the deformation of the central area by associating the rolling data unit with the tensile force application unit; Peripheral area (edge) detection: Control the peripheral tensile strength detection component 303 to move outward along the peripheral tensile strength detection frame 302 (slide rail 2 30201) to apply a pure lateral tensile force to the edge of the fabric until it is taut or the stroke is set; The pressure detector on the detection head 30306 records the peripheral force data when the fabric deforms and breaks in real time, which is used to determine the tensile strength of the outer periphery of the fabric. Mode B: Central and peripheral linkage working mode (global coordination / simulation of complex forces); In this mode, the central tensile strength detection structure 2 and the peripheral tensile strength detection structure 3 work together to simulate the composite and multi-directional tensile forces that the fabric is subjected to in actual use; The specific method is as follows: Three-dimensional synergistic stretching: The lower central tensile strength detection element 203 uses its lifting end to lift the fabric upwards (simulating a pulling action), while the upper central tensile strength detection element 203 uses its detection end to press down synchronously to detect, forming a "bottom lifting and top measuring" linkage data stream; while the adsorption end of the central tensile strength detection element 203 adsorbs the fabric and moves it outwards (radially) to stretch it, the outer tensile strength detection element 303 moves outwards (laterally) synchronously, forming a composite stretching of the fabric with "center pushing outwards and edges pulling outwards"; Dynamic rotational stretching: The motor on the drive platform 201 is started to drive the rotating cylinder 202 to rotate; during the rotation, the central tensile strength test piece 203 (point-line-surface detection trajectory) and the peripheral tensile strength test piece 303 (by the left and right swing of the slider 30303 and the up and down swing of the swing cover 30302) maintain their working state; this breaks the limitation of traditional stretching only along the meridian and parallel directions, and realizes 360-degree multi-directional and variable angle tensile testing, comprehensively evaluating the anisotropic tensile properties of the new material; Multi-mode alternating detection: Through the preset program of the control system, various working conditions can be simulated; for example, when the center is lifted, the periphery is stretched laterally; or the center is fixed by adsorption as a fulcrum, and the periphery swinging detection head simulates oblique pulling. S5. The system summarizes the point-line-surface deformation data collected by the ball detector in the central tensile testing structure 2 and the edge pressure data collected by the pressure detector in the peripheral tensile testing structure 3. By analyzing the above data, the tensile performance of the fabric is obtained. After the test is completed, all lifting heads 20303 and lifting rings are reset, the peripheral tensile testing head 30306 is released, the telescopic cylinder 402 is raised, the fabric is taken out, and the testing process is completed.

[0042] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A device for testing the tensile strength of textile fabrics, characterized in that, It includes a longitudinal multi-section telescopic structure (4) and a central tensile testing structure (2) and an outer tensile testing structure (3) connected in series through the longitudinal multi-section telescopic structure (4). Two sets of central tensile strength testing structures (2) are set up in a mirror image on the upper and lower ends of the longitudinal multi-section telescopic structure (4); the fabric to be tested is placed between the two sets of central tensile strength testing structures (2), and each set of central tensile strength testing structures (2) includes multiple sets of movable and telescopic central tensile strength testing components (203); the central tensile strength testing component (203) is provided with a concentric ring structure with a lifting end, a testing end and an adsorption end; the adsorption end at the upper and lower ends adsorbs the fabric and fixes it or imitates the pulling action; the testing end at the upper and lower ends collects the central tensile strength data of the fabric point by point, line and surface; the lifting end at the upper and lower ends lifts the fabric and fixes it or imitates the pulling action. A set of peripheral tensile strength testing structures (3) is set between the two sets of central tensile strength testing structures (2) and around the periphery of multiple sets of central tensile strength testing components (203), including a peripheral tensile strength testing frame (302) that moves along an arc trajectory; peripheral tensile strength testing components (303) that move along the peripheral tensile strength testing frame (302) are set on the peripheral tensile strength testing frame (302); a second testing end is set on the peripheral tensile strength testing component (303); the second testing end acquires the tensile strength data of the fabric periphery by swinging and moving; During tensile testing, the central tensile testing structure (2) and the peripheral tensile testing structure (3) work together to simulate the combined force scenario of the center pushing outward and the edge pulling outward. On the other hand, the central tensile testing structure (2) and the peripheral tensile testing structure (3) can work independently.

2. The textile fabric tensile strength testing device according to claim 1, characterized in that, The longitudinal multi-section telescopic structure (4) includes a support platform (401) located in the middle and telescopic cylinders (402) located at the upper and lower ends of the support platform (401). The support platform (401) is connected to the outer tensile testing structure (3); The telescopic cylinder (402) is connected to the center tensile testing structure (2) on the corresponding side.

3. The textile fabric tensile strength testing device according to claim 2, characterized in that, The central tensile strength testing structure (2) includes a drive platform (201) connected to the telescopic end of the telescopic cylinder (402); a rotating cylinder (202) is provided on the drive platform (201); multiple sets of central tensile strength testing components (203) are provided on the rotating cylinder (202), one set of central tensile strength testing components (203) is located at the center of the rotating cylinder (202), and the other multiple sets of central tensile strength testing components (203) are arranged around the center of the rotating cylinder (202) and move radially thereafter.

4. The textile fabric tensile strength testing device according to claim 3, characterized in that, The bottom of the rotating cylinder (202) is provided with a slide rail (20201) arranged radially thereon; the central tensile strength test piece (203) includes a telescopic column (20301); the telescopic column (20301) located at the center of the rotating cylinder (202) is fixed in position, and the telescopic column (20301) arranged around the center of the rotating cylinder (202) moves horizontally along the slide rail (20201); a cylinder body (20302) is provided at the upper end of the telescopic column (20301); A concentric ring structure is set on the cylinder (20302); the lifting end is located at the center of the cylinder (20302), and a telescopic lifting head (20303) is set at the lifting end; the first detection end is located outside the lifting end, and a first lifting ring (20304) is set around the lifting head (20303) and telescopic; a ball detector is set around the first lifting ring (20304); the adsorption end is located outside the first detection end, and a second lifting ring (20305) is set around the first lifting ring (20304) and telescopic; an adsorption hole is set around the second lifting ring (20305). The ball detector is attached to the fabric surface and is pulled and rolled when the fabric is deformed. Then, by associating the rolling data unit and the tension force unit, the deformation of the fabric under tension can be inferred. The adsorption pores are connected to a vacuum pump to create a negative pressure environment.

5. The textile fabric tensile strength testing device according to claim 4, characterized in that, The peripheral tensile testing structure (3) includes two sets of ring frames (301) located at the upper and lower ends of the support platform (401); multiple arc-shaped tracks (30101) are provided on the opposite ends of the two sets of ring frames (301). The outer tensile testing frame (302) moves along the arc track by cooperating with the upper and lower arc tracks (30101). The outer tensile testing frame (302) is equipped with a slide rail (30201). The outer tensile strength test piece (303) moves along the outer tensile strength test frame (302) by cooperating with the slide rail two (30201).

6. The textile fabric tensile strength testing device according to claim 5, characterized in that, The outer tensile testing frame (302) is a horizontally placed U-shaped structure with its opening facing the inside of the ring frame (301). A slider (30202) that cooperates with the arc track (30101) is provided on the vertical section. The outer tensile testing piece (303) moves along the slider (30201) on its vertical section within its U-shaped structure.

7. The textile fabric tensile strength testing device according to claim 6, characterized in that, The peripheral tensile testing component (303) includes a peripheral tensile testing frame (30301); the upper and lower ends of the peripheral tensile testing frame (30301) are provided with a sliding block two (30303) that can rotate left and right, and the sliding block two (30303) cooperates with the sliding rail two (30201) to realize the movement and swing of the peripheral tensile testing frame (30301); The outer tensile strength testing frame (30301) is provided with a swing cover (30302) that rotates up and down on one side facing the ring frame (301); multiple sets of outer tensile strength detectors and slide rail three are provided inside the swing cover (30302); multiple sets of outer tensile strength detectors are located on the testing end two, of which the outer tensile strength detector located in the middle is fixed in position, and the outer tensile strength detectors located on both sides move horizontally through slide rail three.

8. The textile fabric tensile strength testing device according to claim 7, characterized in that, The peripheral tensile strength detector includes a detection seat (30304) located inside the swing cover (30302); the detection seat (30304) is provided with a double-sided rack (30309) that moves back and forth and gears (30308) located on the upper and lower sides of the double-sided rack (30309); the gears (30308) rotate by meshing with the double-sided rack (30309), and the center of the gear is connected to the rotating frame (30305); the rotating frame (30305) extends out of the swing cover (30302) and the end is connected to the detection head (30306); The detection head (30306) is set with two sets of gears (30308), one above the other, and a tensile testing space is left between the two sets of detection heads (30306).

9. The textile fabric tensile strength testing device according to claim 8, characterized in that, The detection ends of the two sets of detection heads (30306) are also equipped with anti-slip airbags (30307) and pressure detectors.

10. A method for testing the tensile strength of textile fabrics, characterized in that, The steps of using the textile tensile strength testing device as described in claim 9 are as follows: S1. Start the longitudinal multi-section telescopic structure (4); S2. The fabric center is fixed and automatically unfolded using the central tensile strength detection structure (2); S3. Use the outer tensile strength testing structure (3) to perform outer perimeter docking and secondary tensioning of the fabric; S4, Diverse Detection Mode Execution Phase: Mode A: Independent working mode of center and periphery; In this mode, the center tensile strength testing structure (2) and the periphery tensile strength testing structure (3) do not interfere with each other, and apply specific tensile stress to different areas of the fabric respectively; Mode B: Center and periphery linkage working mode; In this mode, the central tensile testing structure (2) and the periphery tensile testing structure (3) work together to simulate the composite force scenario of the center pushing outward and the edge pulling outward; S5. The system summarizes the point-line-surface deformation data collected by the ball detector in the central tensile testing structure (2) and the edge pressure data collected by the pressure detector in the peripheral tensile testing structure (3). By analyzing the above data, the tensile performance of the fabric is obtained.

Images